Johnson, Chris <br/><br/>
Practical zone system / 
Chris Johnson 
 - 4th ed 
 - London :  Elsevifr,  2007 
 - 284 p :  ill 
<br/><br/><label>ISBN: </label>9780240807560 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zone system (Photography)
<br/><br/><label>LC Class. No.: </label>TR591  / J67 P7 2007